So, sometimes they just need a bit of help to start. Also, the school need to encourage and promote reading.
Having an engaged faculty at school is of course really important. Having engaged parents even more so. The trend these days seems to favor parents abdicating their obligations and downloading them to daycare, the schools and other organizations.
My Mother taught me to read using the phonetics system. I could sound out unknown words at a really early age. I may not have known what a word meant, but I could read it. My parents bought me a dictionary and made me use it rather than becoming a faster and easier alternative. Looking up words increases the likelihood that the word will be retained in a child's vocabulary. Kids learn to enjoy reading at home, by being provided with enjoyable and diverse reading material that is age and ability appropriate. Kids learn to like reading because their parents read to them, explain the pictures and the plot. Most importantly kids learn to enjoy reading because their parents compel them to read on a regular basis. At least every other day for an hour.
Parents determine the type of person their children become by passing on morals, ethics, family values and reinforcement of the material taught in school. It is up to parents to provide explanation and context for those school taught subjects.
Given a Nintendo, a computer and a book, most kids will choose one or both of the former over a book any day of the week. It is up to the parents, even if they can't read well themselves, to ensure their kids have balance and structure in their daily lives. It's not a crime to tell your child to go read for an hour or to go help old Mrs. Martinez sweep her driveway. Kids may not want to do that, but in the end, it's good for them and it is up to parents to ensure that their children are exposed to good things despite the child's misgivings.
This means ensuring that your kids go to school, talk about what they learn in school at home, have some time set aside for exercise and sports, some time for community oriented good works, time to do their homework everyday and time when the TV and other distractions are off and reading any book of interest to the child for at least an hour is the only thing the child is permitted to do. If parents don't ensure their kids make time to read, they won't do it for themselves (usually) and they won't come to appreciate the level of enjoyment that can be had nor reap the benefits of an active imagination that reading promotes.
As children get better at reading, as their minds are better able to envision and model the fantastical worlds they are reading about, reading becomes a life long enjoyment. Parents do this, not the schools. Parents raise and educate their children, schools are a tool, a support mechanism and an introduction to subject material. Schools, do not produce well rounded people, parents do.
Parents need to be taught how to best raise children, how to be supportive even in poverty. How it is important not to let Juan convince you that going to school is optional. Parents need to be reminded sometimes, that being a parent is different than being a friend to your kids. Conflict and exposure to the expectations others have for a child is in and of itself a valuable life lesson that parents should impart to their kids from an early age. Parents need to quit coming up with excuses why they can't or won't be a real parent and accept the job of raising their own kids for the first 18 years.
You can surmise a lot about a child and their home life, just by asking what book they have finished reading in the last 30 days.